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Power over Ethernet (PoE) basics and beyond

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257 points voxadam | 4 comments | 16 Oct 25 14:09 UTC | HN request time: 0.512s | source
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skopje ◴[22 Oct 25 00:53 UTC] No.45663732[source]▶
PoE is awesome. My custom home security system is all CCTV PoE with a gstreamer backend running on four-core fanless linux box. Way to go. Complete control. No batteries, no wares spying on me, no personal data getting scraped by big guys. (Cloud connectivity sucks because I have segmented mp4s and jogging through them hurts but I only care for events after they happen, not while they happen.)
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skulk ◴[22 Oct 25 00:59 UTC] No.45663770[source]▶
Got any recommendations on what cameras to get? The market is absolutely flooded with cheap shitty cloud-connected all-in-one cameras making it hard to find good, simple products.
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1. foobarkey ◴[22 Oct 25 03:48 UTC] No.45664727[source]▶
The cheapest (~15 USD bullet, 20 USD dome) PoE cameras on AliExpress (focal length is pretty much the most important parameter to look at, depending on the fov you want) hooked up to a Unifi NVR. Skip all the vendor manuals, setup steps, and apps - adopt them directly to Unifi Protect.

I put them on separate vlan where they get no outbound network connectivity.

For cases where you want things like facial detection or license plate detection (automatic doors/gates) get a Unifi AI though and those things cost, but for normal perimeter/room monitoring the cheap ones are very good

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2. vulkoingim ◴[22 Oct 25 06:09 UTC] No.45665400[source]▶
I would argue sensor size is what's most impotant to look for in a camera.

Have a look at this thread [1] I have bookmarked. I found it quite informative. I already got some cheap cameras and set them up, but I wish I would have found it earlier. The ones I got are 4MP with 1/3" sensor and perform absolutely terribly in night setting.

[1] https://ipcamtalk.com/threads/getting-cameras-with-the-right...

3. mlrtime ◴[22 Oct 25 11:15 UTC] No.45667393[source]▶
Thanks!

Any specific POE with a good sensor/fl on ali that you recommend? I'm all POE/Protect but would like to play with some cheaper poe cameras.

4. tehlike ◴[22 Oct 25 14:09 UTC] No.45669430[source]▶
I got a bunch of annke dual lenses, put some in their own local only vlan, others waiting to be installed.